Custom CSS (WordPress)

Dat kan onder Customising (theme). Voorbeeld (sep. 2019):

@media only screen and (max-width: 480px) {
    h1 
    {
         font-size: 2em!important;
         line-height: 2em!important;
    }
    h2 
    {
         font-size: 1.8em!important;
         line-height: 1.8em!important;
    }
}